the cloud base. 60. Height of a Tree One hundred feet from the trunk of a tree on level ground, the angle of elevation of the top of the tree is 35°. Find the height of the tree to the nearest foot
the cloud base. 60. Height of a Tree One hundred feet from the trunk of a tree on level ground, the angle of elevation of the top of the tree is 35°. Find the height of the tree to the nearest foot
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Question
This was my answer for question 60 it was a negative. Please explain if I am right or wrong please
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Exercises 55-58: (Refer to Example 10.) Write an equivalent
expression using a cofunction. Approximate the expression
to four decimal places using a calculator.
55. (a) sin 70°
56. (a) cot 23°
57. (a) csc 49°
58. (a) cot 87°
(b) cos 40°
(b) tan 48⁰
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(b) sec 63°
(b) sec 72°
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Applications
59. Height of the Cloud Base (Refer to Example 3.)
From a distance of 1500 feet from the spotlight, the
angle of elevation equals 37°30'. Find the height of
the cloud base.
60. Height of a Tree One hundred feet from the trunk of
a tree on level ground, the angle of elevation of the
top of the tree is 35°. Find the height of the tree to the
nearest foot.
61. Length of a Shadow The angle of elevation of the
sun is 34°. Find the length of a shadow cast by a per-
son who is 5 feet 3 inches tall. Round your answer to
the nearest tenth of a foot.
62. Height of a Tower The shadow of a vertical tower is
40.6 meters long when the angle of elevation of the
sun is 34.6°. Find the height of the tower.
63. Angle of Depression of a Floodlight A company
safety committee recommended that a floodlight be
mounted in a parking lot as shown in the figure, s
to illuminate the employee exit. Find h to the nearest
so as
tenth of a foot.
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